Surgical instrument



FIG. 1 is a perspective view of a surgical instrument showing my new design, with the shaft shown broken in the center for ease of illustration. The broken line showing is for illustrative purposes only and forms no part of the claimed design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a front elevational view thereof. 

I claim the ornamental design for a surgical instrument, as shown and described. 